Where sco=s indicates that this is a “screener” or panelist who has screened out of the study.

Screened (Speedster):
http://blabla/20/survey/finished.phtml?ac={access_code}&sn={study_number}&sco=tf&lang=XX
Where sco=tf indicates that this is a “screener (speedster)” or panelist who has screened out of the study for completing in under a specified time.

Over Quota:
http://blabla/20/survey/finished.phtml?ac={access_code}&sn={study_number}&sco=o&lang=XX
Where sco=o indicates that this is a “Over Quota” or panelist who has screened out of the study due to a quota being full.